Sihtric Caech

Sihtric Caech (884-927) was King of Sudreyjar from 921 to 927, succeeding Ragnall ua Imair and preceding Gofraid ua Imair.

Biography
Sihtric Caech was a grandson of Ivar the Boneless and a cousin of Ragnall ua Imair, and they were both forced to flee to Britain after the Irish expelled the Vikings from Dublin in 902. Sihtric ruled territory in the eastern Danelaw until 917, when Sihtric and Ragnall led separate fleets in an invasion of Ireland. Sihtric recaptured Dublin in 917 and became its new king, and, in 919, he won the Battle of Islandbridge against a coalition of local Irish kings, killing six of them. In 920, he left Dublin for Northymbre, with his kinsman Gofraid ua Imair succeeding him as king. In 921, Ragnall's death led to Sihtric becoming the new King of Northymbre, and he reconquered much of Mercia from Wessex in the following years. In 926, he married a sister of Aethelstan of England as part of a peace treaty, and he briefly converted to Catholicism before reverting to paganism. He died in 927.